# Copyright 2017 The Bazel Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

package(default_visibility = ["//visibility:public"])

licenses(["notice"])  # Apache 2.0

# Constraints used to describe docker compatible toolchains.

constraint_setting(name = "containerized")

constraint_value(
    name = "run_in_container",
    constraint_setting = ":containerized",
)

# Default host platform that has constraint_value set for the
# "@io_bazel_rules_docker//toolchains:run_in_container" constraint.
# This platform must be registered to run xx_image targets
# that require a custom toolchain to run inside the container
# (other than, e.g., the autogenerated toolchain). This
# currently only applies to py_image and py3_image targets
# as the autogenerated py toolchain might point to a different
# location than the py in the container.
platform(
    name = "local_container_platform",
    constraint_values = [
        "@io_bazel_rules_docker//platforms:run_in_container",
    ],
    parents = ["@local_config_platform//:host"],
)

# Default RBE platform that has constraint_value set for the
# "@io_bazel_rules_docker//toolchains:run_in_container" constraint.
# This platform must be registered to run xx_image targets
# that require a custom toolchain to run inside the container
# (other than, e.g., the autogenerated toolchain). This
# currently only applies to py_image and py3_image targets
# as the autogenerated py toolchain might point to a different
# location than the py in the container.
platform(
    name = "rbe_container_platform",
    constraint_values = [
        "@io_bazel_rules_docker//platforms:run_in_container",
    ],
    parents = ["@buildkite_config//config:platform"],
)

_IMAGE_TRANSITION_CONSTRAINTS = [
    ("cpu", "@platforms//cpu"),
    ("os", "@platforms//os"),
]

[[
    # Use a constraint value which will never be valid to prevent
    # accidentally leaving the associated constraint setting unset.
    constraint_value(
        name = "image_transition_{}_unset".format(name),
        constraint_setting = constraint_setting,
    ),
    label_setting(
        name = "image_transition_{}".format(name),
        build_setting_default = ":image_transition_{}_unset".format(name),
    ),
] for name, constraint_setting in _IMAGE_TRANSITION_CONSTRAINTS]

platform(
    name = "image_transition",
    constraint_values = [
        ":image_transition_{}".format(name)
        for name, _ in _IMAGE_TRANSITION_CONSTRAINTS
    ],
)
